Calculating-machine.



A. F. POOLE.

CALCULATING MACHINE.

APPLICATION FILED APR. 27, 1912.

Patented Feb. 3, 1914.

A. F. POOLE.

CALCULATING MACHINE.

APPLICATION FILED APR. 27, 1912.

Patented Feb. 3, 1914.

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I A. P. POOLE. CALCULATING MACHINE. APPLICATION FILED M27, 1912. 1 085,757 Patented Feb.3, 1914.

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"the totalizer, lookin UNITED STATES PATENT OFFICE.

ARTHUR F. POOLE, OF,CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO

WAHL ADDING MACHINE COMPANY, OF WILMINGTON, DELAWARE, CORPORA- TION OF DELAWARE.

CALCULATING-MACHINE.

' Specification of Letters Patent.

Patented Feb. 3, 1914.

Application filed April 21, 1912. Serial No. 693,736.

To all whom-it may concern:

Be it known that I, ARTHUR F. Poona, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Calculating-Ma.- chines, of which the following is a specification. 1

This invention is a new tot-alizer.-to be used in connection with calculating machines, whether the same be simply adding and subtracting, or multiplying and dividing machines. f

\Vhile the totalizer may be used in connection with any calculating machine, for the pur oses of this explanation, it is imagined to mounted upon a totalizer holding bar, and to cooperate with a master mechanism such as shown in Patent No. 893,719, issued July 21, 1908, to John C. \Vahl and now on the market in connection with the Remington typewriter.

The invention is illustrated by the accompanying drawings, of.which Figure 1 shows a sectional elevation of from the tight side. Fig. 2 shows a deve opinent lof the wheels of the totalizer, and Fig. 3 shows the carrying and accumulating wheels of the totalizer drawn to a larger scale andseparated from each other in order to morereadily show their construction.

For the explanation of this invention, it

- is sufficient to recall that in the master mechanism of the above cited patent, there are present a master'wheel 1, and a master dog 2, the mnnerals 1 and 2 referring to similar parts shown in the present application. Both the master wheel and master dog are, by proper intermediate mechanism, connected to and operated by the numeral keys of the typewriter. The operatin of any of the set of numeral keys causes first, the rotation of the master dog about its fulcrum in a direction to advance its upper end toward the front (the left, as viewed in Fig. 1); second, the rotating of the master wheel 1' about its fulcrum or axis an amount-dependent upon the numerical value of the numeral key operated, and in Pa direction dependent upon whether the machine is adding or subtracting; and third,

up-stroke or restroke' of the numeral key,

both the master wheel and master dog remain stationary, but the totalizer holding bar advances one step to the left. fore, so does the totalizer mounted thereon.

The totalizerlras a right side "wall 4, a

.left side wall 5, a cover 6, and a number of shafts 7, extending between the right and left, walls. These shafts serve not only to brace and support the two walls, but also as axles upon which are rotatably mounted the various wheels and levers forming part of the totalizer.

There- The master wheel l is adapted to mesh'.

sefiacimwith a set of digit receiving wheels 8, rotatably mounted upon oneof the shafts 71 Each of the digit receiving wheels 8is in mesh with an accumulating wheel 9'.

There are thus as many accumulating wheels 9 as-there are digit receiving wheels 8. But

' the accumulating wheels are not all mounted upon the same shaft. Instead, they are mounted upon two shafts, and each alternate accumulating ,wheel is mounted upon the other shaft.

Epicyclically and rotatably mounted. upon each accumulating wheel 9 are two pinlons 10. "he reason why two epicyclic pinions are used instead of one is simply a matter of convenience,.and not of theory. Each epicyclic pinion is in mesh with'a spur gear 121 forming a. part of a carried wheel 12, and also with an annular gear 111 forming apart of the carrying gear 11. iach carrying wheel 11, besides the teeth 111 above mentioned, is provided on its outside with two carrying teeth 112, a locking disk 113, and a spur gear 114. To cooperate with the carrying tooth 112 and the locking disk 113. the carried wheel is pro vided with a carriable gear 122 and a lockable disk 123.

The construction .of the carrying teeth 112, carriable gear 122, locking disk 113, and lockable disk 123 is old, well-known in "the rotation of the correspon the art, illustrated and thoroughly explained in many lpatents, and in general resembles the Genezajmechanism. It will therefore not be further entered into.

' the carried'wheel 12 isprovided'with a'hollow at its right. This is 'sim ly a clearance space for thehub of the.ad' acent accumu-' lating wheel. The carried wheel also ha's a ortion-125 which is smoothand cylindri-f cal. This serves as a bearin whereon is mounted a bearing 115, on the inside of the carrying .wheel. The carrying wheel is thus supported so as to be freely rotatable.

It has been stated that the various carried wheels 12 are freely rotatable upon their supporting axles. This is generally trueexcept for the carried-wheel 12 at the extrem right of. the series. 'This particular carried wheel is rigidly fastened to the right side wall and does not rotate; The operation of he totalizer is as follows: Imagine the various accumulating 'wheels 9 to have, each of them, imparted thereto a rotation roportional to the value of the digit. Should that digit be zero, then 'ngaccum ilating wheel must alsobe zerothat is, that particular accumulating wheel must be held "fast.v The accumulatin wheel inits rotation carries therewith t e epicyclie pinions v10. These meshing with theinternal'teeth 111 of the carrying wheel upon the same shaft andimmediatelyto the right, cause the rotation of the latter a proportionate amount. Whenever a carriage takes place, the carrying to'oth 112 strikes upon the carriable ar 122 of the carried wheel u onthe other e aft and rotates said carried wheel one step. Moreover, overthrow is prevented by the simultaneousen gement andsubsequent' disengagemento the-locking disk 113 with the-lockable. disk 123. "The carried wheel 121 is thus rotated one, and only one, step, and because of its engagement by meansofits spur teeth 121 with the'ep1-- cyclic; pinions 10 u on the. accumulating wheel .9 next tothe right and upon the same shaft, there :is impartedv to the marrying e'picyclic 'p'mions' .'10,- a "movement of one step. The"re"may thus be"im p'arted to the higher carrying wheel 11 a movement due to [the digital 1Ot8 .tl0n 0f the accumulatin wheel'9 immediately to the left thereof, an

' also a rotation due to the 'carria e of the next lowercarrying wheel 11.

or simultaneously, {on account of the epicyclic construction. 1

It is thus evident that whether all of the accumulating] wheels are rotating in the same direction, or some-in the opposite di wheel 11, also in engagement with the latter.

oreover, these two rota-tions,-1mpartable'to the higher. carrying wheel 11;. may occur successively merit of 'the carrying wheelsll from their zero positions Wlll alwazsbev exactly pro; portional to the'sum of t e' movements thus far-imparted to the accumulating'wheels 9,. carrying having alreadyutalnipace mjthe' proper manner., There only the exhibiting to the eye; thej-valuer of; the' displacement ofjeach carrying;wheel '11 from ts zero position This-Lia .a' wfi pl hed by pr viding we iota.

which mesh .thje gears"'114, f m-. -ii1g part of the-wcarrymgY-wheels 11, and :th'ese intermediate -gears .-13 in their, turnimesh with gears 14 'foi'ming-part -oLthe I numeral wheels .15. These numeral-wheel's fbearflon their-periphery the figures 0, 1, 2;, )3, etc., which are exposed at the exhibition ;slot 16 inthe cover. V v

'Inthe ahoveexplanatiom'it was pointed Zout that each accumulating wheel 9 must 35 have a definiterotation imparted thereto, and if that rotation should'be zero, the-acgcumulating' wheel must be positively held iand prevented from rotating. This'particular totalizer is intended for cooperating iwith a master wheel. The digits would itherefore be entered into the totalizer one Zat a. time, sm iatim, and it is therefore neces- ;sary to hold all the accumulating wheels exgcept the one. which is in engagementwith 5' jthe mastergwheeh This is accomplished by' iproviding aseris 'of holding levers 20,=- one j oreach o'f thereceiving wheels Each *holding lever is provided withaltooth 21 at 'ff-f =its farther endwhich enters a space upon "iqo' Ethe gear 8 and prevents the latterfrom roj Ztating. Each liolding lever is also provided :at'its opposite end with an inclined slot 22 Qwherein s entered a. pin'23 fastened-in an arm.24. Theiarm-24 forms part of 'a lever Erotatably mounted upon a supporting shaft Eand provided with a tension spring' 25. @Each arm has also extending' therefrom atfront lowercorner a fin er-26 adapted ;to-be pushedfby the master fog 2. The operating of the numeral ke therefore "causes Ethe finger 26 to be move forward and its ljcooperating holding lever 20 to' have its ffholding tooth-21 retracted from its digit ;receiving wheel 8. This particular digit re- "ceiving wheel is therefore free to rotate and is so rotated positively by the master wheel 1 which at that moment is in engagement therewith. All the other digit receiving wheels ,8 are however locked by their holding levers for all theother arms-'24 are in "l3l18l1 normal-position and kept so by their springs 25. Having thus described my mechanism, I claim: r

1. In a totalizer: a series of numeral wheelsmounted on one-shaftya' series of carrying wheels; a series of idler wheels in termediate between the carrying wheels and rectio'n, or some stationary, the displace-J the numeral wheels; two'shafts for said searm-ease ge e-75 ries of idler wheels the consecutive idler wheels being arranged alternately upon the two shafts.

2. In a calculating machine totalizer: a series of numeral wheels; a shaft therefor; a series of idler wheels, one for each numeral wheel; two shafts therefor; a series of carupon two of their four shafts, and the car- I rying wheel and idler wheel of the next set being placed upon the two otherof their four shafts.

3. In a calculating machine totalizer: a series of accumulating wheels; two shafts for said accumulating wheels, the accumu lating wheels being placed alternately upon the two shafts; a series of receiving wheels for said accumulating wheels, said receiving wheels being placed upon one shaft; and means for operating said receiving wheels.

'4. In a totalizer: a series of sets of parts,

one set for each decimal placed the totalizer, each set being composed of 1, an accumulating wheel,'2, a higher carrying wheel, 3, a lower carried wheel, and 4, epicyclic connection between the other three members of-the set; a series of locking dogs, one for eachaccumulating wheel, and means for normally retaining each locking dog in its locking position, to thereby prevent the rotation of its engaged accumulating wheeland mechanism for unlockin one of sai dogs, while retaining the ot ersin their locking positions.

5. In a calculating machine: axombination of a master wheel, a master dog, and a totalizer, the totalizer moving relatively to the master wheel and-master dog; the totalizer containing for each decimal place thereof a set of parts composed of 1, an accumulating wheel, 2-, a higher carrying wheel, 3, a lower carried wheel, and 4, epicyclic connection between the other three, 5, a locking dog to lock the accumulating wheel against rotation, and 6, means tending'to holdsaid dog in looking position, the waster wheel and master dog thus simultaneously engaging an accumulating wheel and locking dog, the thereupon motion of the master clog causing the retracting of the locking dog from the ccumulating wheel,

and the consequent unlocking of the latter,

and the rotating of the master wheel causing movement only in that particular accumulating wheel which is in engagement therewith, the rest of the accumulating wheels remaining locked by their locking dogs. A

6; In a calculating machine: the combination of a'master wheel. a master (log, and a totalizer, the totalizer being movable relatively to said master wheel and master dog; the totali'zer containing a series'of sets of parts, one set for each decimah place thereof,

each set containing therein 1, anaccumulating wheel, and 2 a locking dog normally engaging said accumulating wheel to prevent the rotation thereof; the accumulating wheel being adapted to be engaged by the master wheel, and the locking dog -jor said accumulating wheel being adapted to be simultaneously engaged by the master dog.

7. In a calculating machine: the combina; tion of a master wheel, a master dog, and a totalizer, the totalizer being movable relatively to said master wheel and master dog;

the totalizer containing a series of sets, one

set for each decimal place thereof, each set containing therein 1, an accumulating wheel, 2, a locking dog-normally engaging said ac-- cumulating wheel to prevent the rotation thereof, and 3, a lever to operate said locking dog; the accumulating wheel being adapted to be engaged by the master wheel, and the locking dog for said accumulating wheel being adapted to be simultaneously engaged by the master dog.

8. In a calculating-machine: the combination of a master.wheel, a master dog, and a totalizer, the totalizer being movable relatively to said masterwheel and master dog the totalizer containing a series of sets of parts, one set for each decimal place thereof, each set containing 1, an accumulating wheel, 2, a locking dog normally engaging said wheel. to prevent the rotation thereo 3, a holding lever to operate said locking 4 dog, the accumulating wheel being adapted to e engaged by the master wheel-and the lockin dog forsaid accumulating wheel being a apted to be simultaneously engaged by said master dog, and 4', a slot and pin connection between said holding lever and locking dog.

9. In a calculating machine: the combination of a master wheel, a master dog, and a totalizer, the totalizerbeing movable relas tiv'ely to said master wheel and master dog; the totalizer containing a series of sets of parts, one set for each decimal place thereof, eachset containing 1, an accumulating wheel, 2, a locking dog normally engaging said wheel to prevent the rotation thereof; 3, a holding lever to operate said lockin dog, the accumulating wheel being adapted to be engaged by the master wheel, and the locking dog for said accumulatingiwheel being adapted to be simultaneously engaged by said master dog; a slot in said locking dog, said slot coiipera-ting with a pin in said holdin lever.

10. n a calculating machine: the combination of a master wheel, a master dog, and atotalizer, the totalizer being movable relatively to said master wheel and master dog;

g the totalizer (gontaining a. series of sts of parlfs, on e setfor eachdecimal place thei'e- -v of gaoh set containing 1, an accu'mnlating.

whsel, -2,"a locking'idpg normally engagin ing lx'er; and a spring in said-holding lever tokeep 1t 1n normal pQSltl'OIL' 5 sai --wheel"to.prevent"the rotation lthred scribed my name in the presence of two wit- 3, a. hfi l ding- 1evr:te bpfizrzite said lgckirg nesse's."

0g, t qaccilm'ulatingw "ee 'being a apt" w to be engaged by'jhe master wheel, and the 1 r ARTHUR 1 DOLE" lever for said' acninulating wheelbeing Witnesses; 10 adapted to' be'simulta'n'eously engaged by SToLzExmcH,

--said master dog; a slot in saidlocking "dog, 0. R. HpRLBU'r.

Baplc: of this patent mfly be obtained (or-five cents ea c1i,,,.by addressing the {lommissioner of Patents,

r wgshingtqmnnqfif said slot coiiperating with a pin in said 'h lrL- In witness whereof I have hereunto Sub- 

